Using Prism v4 (with MEF for that matter) + MVVM. There is a convenient way to let views/viewmodels be aware of the view's state. Simply implement the IActiveAware interface in the viewmodel (and/or the view) and make sure the view is attached to a region. Now, when the view becomes active/inactive the IsActive property of the viewmodel will reflect its state.

Now, I have something like 20 different panes but not all of them are visible at all times. Just like in Visual Studio, some documents need certain panes. E.g. if you open an image in Visual Studio, the Colors pane becomes visible. For commands and messages, this implies a problem. Again in Visual Studio, consider the Ins shortcut in the Image editor. Issuing this command adds a new image type. However, if you issue this command in your source code, you toggle insert mode. Ok, so a command can mean different things depending on context or "activeness" if you'd like. If the active document is an image, the command should be handled differently than if it is a text file.

So for my ImageViewModel I have an OpenCommand. The same goes for TextFileViewModel. Now, If I press the Ins key the active document's corresponding OpenCommand should be issued. If I had two views - ImageView and TextFileView - I would simply implement the IActiveAware interface and issue a DelegateCommand (which is IActiveAware) to make sure the right OpenCommand is triggered. But... I have my views in panes. Now what?

How can I successfully handle IActiveAware (or other suitable interface) for my RadDocking/RadDocumentPane/RadPane hierarchy?

E.g. When my active RadDocumentPane contains a TextFileView, then my TextFileViewModel should be aware of this "Text File state". Similarly, if my active RadDocumentPane contains a ImageView, then my ImageViewModel should be aware of this "Image File state".

This is needed not only to correctly coordinate commands, but also to allow multiple viewmodel instances know if they should respond to certain messages/events. Since panes can be pinned, hidden etc, it's not completely obvious how this should be handled. Ideas?

UPDATE: I believe a good start would be to let the setter of ActivePane issue the Microsoft.Practices.Prism.IActiveAware interface in the same way Prism does it. (See RegionActiveAwareBehavior.cs in Prism 4.)

Hello,

When I try to right click on a misspelled word in a RadRichTextBox, I am not getting any suggestions.  The Rad En-US dictionary is loaded for my project, and misspelled words are underlined in red.  I just do not get the dialog box with suggestions when I right click on the misspelled word.

Do you have any ideas as to why and how to fix the issue?

Thank you 

I have a RadGridView inside a RadPanelBarItem, the grid has lots of columns so doesn't fit horizontally in the PanelBarItem.  By default the RadPanelBarItem expands to accommodate the gird however I'd like the grid to respect the width of its parent RadPanelBarItem.


I have tried binding the width of the RadGridView to the ActualWidth of the RadPanelBar which gets close but is off by a few pixels due to the margin around the RadPanelBarItem content.  I'd prefer a solution which doesn't involve binding the width of the grid.

I have an object hierarchy and for some of the classes I want to hide some properties for the propertygrid.

In the baseclass FieldProperty I have IsReadOnly, IsReadOnly is OK for a textbox but not for a label.

Let's sum it up

Label:
Don't show IsReadOnly 
TextBox:
Show IsReadOnly 

I use the intersection mode for displaying objects with common properties so I need AutoGeneratePropertyDefinitions="True" and I also need to create custom editors.

There are many more exceptions like this for all the other input types. I can't changes the object structure because the datalayer is already coded and there is not time to fix it.

Can someone help me?

Hello folks,

we are using the version 2011.2.920.35 of the RadControls.
Our software is being used on windows xp, 7 and server 2008.

A dockpanel contains a ribbonbar (top) and the gridview. The gridview is filled with hundrets of items. When we maximize our window and use the scrollbar to scroll down to the last entry, some rows are displayed behind the taskbar. This happens only on vista, 7 and server 2008 (windows 8 not tested until  now). On windows xp all runs fine.

Please take a look at the bottom of the attached screenshots.

Is this a bug?


Kind regards

Hi,

i'm using a radDataForm with an EditTemplate. There i have some "DataFormDataFields". I can change the
Foreground of the "Label", but how do i change the Foreground of the input-box?

See attached File (how to change color of the Word "Foreground"?).

Thanks
Regards
WW

Good morning

I've been trying to insert a custom diagram shape into a RaddiagramContainer in code behind using the following 

containerItem.Items.Add(customshapeItem); 

it seems that the container.items.count is 1,however when the diagram is display shows my custom shape in the position of the diagram but not inside the container what could be happening?? 

Thanks in advanced

Hi There,

for more information please see the attachment.
I am creating a style for Dockpanel, for some part of control i want to remove the border and background, but i am unable to find the control part in the expression blend. 
can you please guide me that how i can remove unwanted properties from the style.

Regards,
Srinivas.

This has probably been asked before, but I couldn't find any clear answer.
The documentation only mentions the Ctrl key.

Does the RadTreeView support multiselection of several nodes at once via the Shift key?

Hi,

I've looked around the forum for an answer to this one but nothing seems to have worked for me.

The RibbonWindow's default title style causes problems for my users. By default we have black text on a glass background (Windows 7). When the user has a dark wallpaper, they are unable to read the title bar at all. Also, when maximised, the title is a little too high in the bar to match the standard windows title bar.

I'd like to add a semi-transparent white background behind the title bar caption to match Windows 7 and move the text down a couple of pixels when maximised. Is this possible? Ideally I would like to do this without using code behind, only XAML, as this is an M-V-VM solution.

Thanks